++++ MEASURES ADOPTED BY COMMUNITY INSTITUTIONS - DIRECTIVES - IMPLEMENTATION BY MEMBER STATES - TRANSPOSITION OF A DIRECTIVE WITHOUT THE ENACTMENT OF LEGISLATION - CONDITIONS - EXISTENCE OF A GENERAL LEGAL CONTEXT ENSURING FULL APPLICATION OF THE DIRECTIVE - MERE ADMINISTRATIVE PRACTICES INSUFFICIENT ( EEC TREATY, ART . 189*(3 )*) ENVIRONMENT - CONSERVATION OF WILD BIRDS - MANAGEMENT OF A COMMON HERITAGE - DIRECTIVE 79/409/EEC - NEED FOR A FAITHFUL TRANSPOSITION BY THE MEMBER STATES ( COUNCIL DIRECTIVE 79/409/EEC )